Unable to Login to Xubuntu11.10.

Hi! All you fellow Ubuntu fans. I can't login to Xubuntu. I did a clean install of Ubuntu 11.10. I don't love Unity. I've been enjoying Gnome though. I'd still like something lighter for my little ASUS eee1005HAb with 2GB-RAM. After playing with both LUBUNTU and XUBUNTU on a live flash drive I installed the “lubuntu-desktop” package and later, the “xubuntu-desktop” package. I have a whole long list of different sessions to login to. Alas,I can't login to over half of them. I CAN login to: Lubuntu, LXDE, GNOME, Ubuntu, & GNOME/Open Box. I CAN'T login to Lubuntu-Netbook; Xubuntu-Session, XFCE, KDE/OpenBox (where the heck did THAT come from?), GNOME Classic, or Ubuntu 2D.It's not all bad, I rather like LXDE and Lubuntu. But, what's up with all this? Also, How can I get Xubuntu? What did I break? I rather suspect that LXDE & XFCE are at the bottom of this. It may be that I can't have one if I have the other. In that case, how do I go about switching back & forth? Many thanks for your help on this!

you could try all this on a Virtual box https://www.virtualbox.org/wiki/Downloads
the OSE [software center]version is fine, unless you want to share files of access
go with the fullversion for more functionality
happy testing